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Children's Allegra (Fexofenadine) Dosage Chart by Age
Children's Allegra is labeled by age: 2 to under 12 years, 5 mL (30 mg) of 30 mg/5 mL suspension every 12 hours; 12 years and older, 60 mg every 12 hours or one 180 mg tablet once daily. Under 2 years, ask a doctor.
Allegra (fexofenadine) dosage chart by age
| Age | Dose | Interval | Max daily | Notes |
|---|---|---|---|---|
| Under 2 years | Use clinician guidance | varies | — | Consumer OTC labels direct families to ask a doctor. |
| 2 to under 12 years | 30 mg (5 mL of 30 mg/5 mL suspension) every 12 hours | every 12 hours | Max 60 mg/day | — |
| 6 to under 12 years | 30 mg ODT every 12 hours (let it melt on the tongue, on an empty stomach) | every 12 hours | Max 60 mg/day | ODT: do not use under 6 years (label). |
| 12+ years | 60 mg (tablets or 10 mL of 30 mg/5 mL suspension) | every 12 hours | Max 120 mg/day | — |
| 12+ years (24-hour tablet) | 180 mg (one Allegra 24 Hour tablet) | once daily | Max 180 mg/day (1 tablet) | Use either the 12-hour or the 24-hour product, not both. |
Exact OTC labels vary by formulation. Do not take with fruit juice, and follow the package for the specific product in hand.
Sources: MedlinePlus; FDA (links below). . This chart does not replace the product label or your clinician's advice.
Is there an Allegra dosage chart by weight?
No. The Allegra (fexofenadine) label doses by age, not weight. Ask your pediatrician or pharmacist for children under 2 or if your child is much smaller or larger than others their age.
Which bottle do I have?
- Suspension 30 mg/5 mL
- ODT 30 mg
- Tablets 60 mg
Match the strength printed on your bottle or package (mg per mL, per 5 mL, or per tablet) before using the chart.
Safety checks before dosing
- Do not take with fruit juice (apple, orange, grapefruit), which can reduce absorption; tablets are taken with water.
- Keep aluminum or magnesium antacids at least 2 hours away.
- Do not use antihistamines as a substitute for epinephrine in severe allergic reactions.
When to call a doctor
- Symptoms get worse or do not improve after appropriate dosing.
- Your child has a chronic condition, kidney or liver disease, or takes other medicines.
- You are unsure about the concentration or the correct dose.
Need a dose for your child's age and product?
- Fexofenadine (Allegra) dose calculator — enter age and weight to check the label dose and the mL for your bottle.
- Printable Allegra dosing chart
- All children's OTC dosing charts
Frequently asked questions
It is an age-based quick reference for fexofenadine (Allegra). Children 2 to under 12 years commonly use 30 mg every 12 hours, while 12 years and older commonly use 60 mg every 12 hours.
Yes. Allegra is a brand name for fexofenadine.
No. Apple, orange, and grapefruit juice can lower absorption. Give tablets and suspension with water; the ODT can be taken with or without water.
Yes. Aluminum or magnesium antacids can reduce absorption, so keep them at least 2 hours away from the dose.
It is one of the lower-sedating oral antihistamines, but some children can still feel sleepy or dizzy.